Souma is really susceptible to cracking up, and even memories will put him into laughing fits. But being self-conscious about this, he always tries to hide it. When he does this again at a clothing store his friend works at, the friend asks him why he does that, especially when it's so easy to tell anyway. Later, Shun also repeats the same sentiment...
So then, I decided to become 
this totally cool guy.
لذا حينها قرّرتُ أن أصبح هذا الشابّ الرّائع
Darum hab ich beschlossen,
ein obercooler Typ zu werden!
Por eso decidí volverme
un hombre muy estoico
Por eso decidí volverme
un hombre muy estoico
C’est pour ça qu’un jour,
j’ai décidé de devenir impassible.
Perciò ho pensato di diventare
un ragazzo più cool
Por isso, decidi me tornar
um cara bem descolado.
Тогда я решил стать
классным и невозмутимым.